Musk's comments came two days before International Holocaust Remembrance Day and right after he was criticized for making what many viewers interpreted as a Nazi salute during an inauguration speech.
After 16 years in office, the German chancellor is stepping down. Early results show a razor-thin margin in what is expected to be one of the closest outcomes in years.
Sunday's federal election will determine who will follow Merkel, who has served as Germany's chancellor for 16 years. The country's next government is expected to be a coalition of three parties.
Social Democratic Party leader Olaf Scholz, the front-runner in the polls to succeed German Chancellor Angela Merkel, is credited for transforming Hamburg when he was the city's mayor.
